Flue-cleaner.



C. LEONARD & F. .l. THOMPSON.

fLUE CLEANER. AFPLICATION FILED AUG.6, 1912.

Patented Aug. 17, 1915.

VENTORJ W? seam 5 CARL LE NARD Ann. r n e nears-new ef-B L EX S.

j LUE-C EANER.

To all whom it may concern Be it known that we, CARL LEONARD and FLOYDJ. TrroMPsoN, residing at Fate, in the county of Rockwall and State ofTexas, have invented new and useful Improvements in Flue-Cleaners, ofwhichthe following is a specification.

This invention relates to the classof flue cleaners and pertainsespecially to a steam cleaning device used in connection with thecleaning of boilerfiues, etc! 1 An object of the invention is to provida portable device adapted to be carried from place to place for thepurpose of cleaning fiues of all dust, soot and sediment that might haveaccumulated therein.

Another object of the invention is to provide a cleaning device forusing the kinetic energy of steam rather than the expansion force.

A further object of, the invention is to provide a specially constructednozzle adapt ed to be placed at a flue opening to give the steam as itpasses therethrough a spiral,

winding or-whirling motion thereby causing all the soot or dust withinthe flue to be dis lodged and forced out with the escaping steam. V

With the foregoing and other objects in view, our invention consists insuch details of construction, arrangement and combination of the severalparts as will be hereinaft-er fully described'and specifically pointed.out in the appended claims. 1

In describing our invention in detail, reference will be had to theaccompanying drawings wherein like characters denote like orcorresponding parts throughout the'several parts and in which,

Figure 1 is a longitudinal section of the device. Fig. 2 is an enlargedsectional view of the nozzle, and Fig. 3 is an enlarged sectional viewof the nozzle end.

V In the drawings the numeral 1 designates a nozzle consisting of ashell 2 on the inner side of which are a suitable number of spiral orscrew-like projections 3 which begin at the point at and widenuniformally so as to narrow the opening at 5 thereby forming a sort or"choke bore. These screw like projections are either cast with the shellor are made separately and riveted thereto. It is these projections 3which give the whirling,

p H '.lwtentedeugirefilli- Application fiieali'u nst errata- Serial No.713,661.

screwlike motion to the steam as it leaves wood, and is slitted at 10and provided with lugs 11, which are drawn together by means of a boltof set-screw for securely clamping the handle in place without injury.Asthe' steam is admitted into the inlet part 12 of the T it comes incontact with the rounded face of a-plug or stopper 1?), thus forcing itup into the'nozzle l.

It will be readily seen that the kinetic energy of the steam is used,which with the great volume made possible by the open constructlon ofthe nozzle and the revolving, whirling, screw-like motion similar to themotion of a bullet, when leaving a rifle barrel,the steam s given themaxlmum cleaning efliciency.

We desire it to be understood that we may make slight'changes in thecombination and arrangement of parts Without departing from the spiritof the invention, provided such changes come within the scope of theappended claims, 7

Having thusfully described our invention what we claim as new and desireto secure by Letters Patent is 1. In a flue cleaner, a tapering nozzledischarging through its larger end, spirally disposed blades connectedwith the interior wall of said nozzle, said blades being curvedtransversely, the inner edges of said blades converging from the inletportion of said nozzle toward the center of the enlarged dischargeportion thereof and extending beyond the plane of the end'of saidnozzle.

2. In a flue cleaner, a tapering nozzle discharging through its largerend, spirally disposed blades connected with the interior wall of saidnozzle, said blades being curved transversely, the inner edges of saidblades converging from the inlet portion of said fyond the plane of theend of said nozzle,

nozzle toward the center of the enlarged disand rotating steam zis it isdischarged from charge portion thereof and extending be said upper endof said nozzle.

v vCARL"LEONARD.1.r the inner edges of the blades provldlng a free s 7 zunobstructed passage-0f the steam into the p ,l smaller end of thenozzle, the blades being "Witnesses: disposed in close proximity attheir upper J oHN'W. MEL DY, ends to increase the force of the whirlingV DEAN WALLER.

Copies ot'thiepatent may be obtainedrtbrfflire cents eabhQby addressingthe Commissioner oflfatents;

i Washington, D. 03- 5 T

